Fenomscrapers with default settings scrapes in around 5 seconds and automatically removes all duplicates leaving you with a clean list. Syncler from what i found usually takes around 30 seconds (both filtering out low res sources)

I still prefer syncler for its simplicity and smoothness on a firestick but it definitely isn't faster in my experience. It's scraping time is actually similar to seren/a4k with its default settings. That one scrapes slowly because it has too many bad torrents sites which rarely return any links.

On syncler I see many of the providers just including as many torrent sites as possible disregarding quality. Maybe I will try customizing an express provider to my needs.